Use php to extract birthday, ID card size, ID number, and military status from the ID card

Use php to extract birthday from ID card, including 15-digit and 18-digit ID cards

function getIDCardInfo($IDCard,$format=1){ 
 $result['error']=0;//0：未知错误，1：身份证格式错误，2：无错误 
 $result['flag']='';//0标示成年，1标示未成年 
 $result['tdate']='';//生日，格式如：2012-11-15 
 if(!preg_match("/^(\d{15}$|^\d{18}$|^\d{17}(\d|X|x))$/",$IDCard)){ 
  $result['error']=1; 
  return $result; 
 }else{ 
  if(strlen($IDCard)==18)
  { 
   $tyear=intval(substr($IDCard,6,4)); 
   $tm 
   $tday=intval(substr($IDCard,12,2)); 
  }
  elseif(strlen($IDCard)==15)
  { 
   $tyear=intval("19".substr($IDCard,6,2)); 
   $tm 
   $tday=intval(substr($IDCard,10,2)); 
  }
   
  if($tyear>date("Y")||$tyear<(date("Y")-100))
  { 
    $flag=0; 
   }
   elseif($tmonth<0||$tmonth>12)
   { 
    $flag=0; 
   }
   elseif($tday<0||$tday>31)
   { 
    $flag=0; 
   }else
   { 
    if($format)
    {
     $tdate=$tyear."-".$tmonth."-".$tday; 
    }
    else
    {
     $tdate=$tmonth."-".$tday; 
    }
     
    if((time()-mktime(0,0,0,$tmonth,$tday,$tyear))>18*365*24*60*60)
    { 
     $flag=0; 
    }
    else
    { 
     $flag=1; 
    } 
   }  
 } 
 $result['error']=2;//0：未知错误，1：身份证格式错误，2：无错误 
 $result['isAdult']=$flag;//0标示成年，1标示未成年 
 $result['birthday']=$tdate;//生日日期 
 return $result; 
}

The above introduces the use of PHP to extract the birthday from the ID card, including PHP and ID card content. I hope it will be helpful to friends who are interested in PHP tutorials.